Position Overview

Working at Merpay

• Merpay is home to some of the greatest experts within Mercari Group. Our commitment to a culture of openness allows members to discuss architecture on Slack channels organized by business domain, send pull requests to each other on GitHub, and share knowledge on the internal Wiki. We hold “Go Friday” and other weekly study groups for engineers but open to all, encouraging engineers to help one another grow. Some members have no experience developing in Go before they join, but we help turn them into Go enthusiasts early on through involvement in our internal Go community and “Gopher Dojo,” our short-term, intensive training. Members further develop their expertise while demonstrating their abilities at both internal and external engineering community events.

Job Description

• Handle web application and API development in Go

• API/interface design for microservices using Protocol Buffers and gRPC

• Improving services and measuring effectiveness using quantitative and qualitative analysis on user behavior logs, etc.

• Design architecture and select middleware based on application requirements

• Microservice performance tuning, monitoring, and alert handling

Development Environment

• Programming languages: Go

• Infrastructure: Google Cloud Platform (Compute Engine, Kubernetes Engine, Spanner, Cloud SQL, Storage, Stackdriver Logging, Dataflow, Pub/Sub, etc.)

• Configuration management tools: Terraform

• Analysis Platform: BigQuery / Looker / Data Studio

• Monitoring: Stackdriver Monitoring / Datadog / PagerDuty / Sentry

• CI/CD: Circle CI / Spinnaker

• Knowledge Tool: Crowi / Confluence

• Other: GitHub / Slack

• Development Method: Agile (Scrum, Kanban, etc.)

Required Experience

• Shared belief in Merpay’s mission and values

• Knowledge and experience in web application development

• Experience designing schemas and creating efficient queries for databases (such as RDB, NoSQL, etc.)

• Experience operating web applications and conducting performance tuning, knowledge in security

• Experience selecting middleware and designing software architecture

• Ability to take ownership and lead the software development process

Preferred Experience

• Experience developing and operating using Go and GCP

• Experience developing and operating large-scale, high traffic system

• Experience establishing new services and tackling the challenges in the growth phase of a service

• Experience as developer lead or management / experience improving the development process

• Experience in statistical data analysis

Language Requirements

• English: Business level (preferred)

• Japanese: Business level (preferred)

Related Articles

• Payment and Transaction Management Using Microservices (only available in Japanese)

• A Chat With Engineers Vol.25 @hamakn (Merpay Tech Lead) Do You Have a Minute? (only available in Japanese)

• The Merpay Backend Team looks for understanding and enthusiasm over expertise #WorkWithMerpay | Mercan (only available in Japanese)

Working Conditions

Employment Status

Full-time

• Probationary period: First 3 months after joining the company. (During this period your contract conditions will be the same as that of a permanent employee.)

Office Location

Roppongi

Work Hours

• Scheduled working hours: 10 AM – 7 PM

• Currently, due to COVID-19 pandemic, we have introduced a full-flex system without core time to increase the choice of working hours and allow for more flexible working styles.

Holidays

• Two days off per week (as well as national holidays, New Year's break, etc.)

• Paid leave, congratulatory and bereavement leave, relax days, sick leave

Salary

• Annual salary paid in 12 installments (monthly)

• Based on skills, experience, and abilities

• Reviewed twice a year

Benefits

• Complete health and social insurance

• Incentive program

• Support systems, including those that benefit employee family members

• Language learning support

• Translation/interpretation support
  *See this page for details